Class 12

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

You must login to ask question.

Ask A Question

Category: Class 12

Subjects related to class 12

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

You are given prisms made of crown glass and flint glass with a wide variety of angles. Suggest a combination of prisms which will (a) deviate a pencil of white light without much dispersion, (b) disperse (and displace) a pencil of white light without much deviation.

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.23 NCERT Solutions for Class 12 Physics Chapter 9 Question-23

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

At what angle should a ray of light be incident on the face of a prism of refracting angle 60° so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.22 NCERT Solutions for Class 12 Physics Chapter 9 Question-22

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

(a) Determine the ‘effective focal length’ of the combination of the two lenses in Exercise 9.10, if they are placed 8.0 cm apart with their principal axes coincident. Does the answer depend on which side of the combination a beam of parallel light is incident? Is the notion of effective focal length of this system useful at all? (b) An object 1.5 cm in size is placed on the side of the convex lens in the arrangement (a) above. The distance between the object and the convex lens is 40 cm. Determine the magnification produced by the two-lens system, and the size of the image.

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.21 NCERT Solutions for Class 12 Physics Chapter 9 Question-21

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

A screen is placed 90 cm from an object. The image of the object on the screen is formed by a convex lens at two different locations separated by 20 cm. Determine the focal length of the lens.

Class 12 Physics CBSE and UP Board Ray Optics and Optical Instruments Chapter-9 Exercise 9.20 NCERT Solutions for Class 12 Physics Chapter 9 Question-20

Ashok0210

Asked: March 21, 2021In: Class 12 Physics

Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelength, frequency and speed of (a) reflected, and (b) refracted light? [Refractive index of water is 1.33.]

Class 12 Physics CBSE and UP Board Wave Optics Chapter-10 Exercise 10.1 NCERT Solutions for Class 12 Physics Chapter 10 Question-1

Load More Questions

Category: Class 12

You are given prisms made of crown glass and flint glass with a wide variety of angles. Suggest a combination of prisms which will (a) deviate a pencil of white light without much dispersion, (b) disperse (and displace) a pencil of white light without much deviation.

At what angle should a ray of light be incident on the face of a prism of refracting angle 60° so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.

A screen is placed 90 cm from an object. The image of the object on the screen is formed by a convex lens at two different locations separated by 20 cm. Determine the focal length of the lens.

Monochromatic light of wavelength 589 nm is incident from air on a water surface. What are the wavelength, frequency and speed of (a) reflected, and (b) refracted light? [Refractive index of water is 1.33.]

Which is the best website providing NCERT Solutions?

NCERT Books

Where can I get NCERT books in PDF format?

How to learn palmistry online free in hindi?

Palmistry: Hasth rekha kaise dekhe?

Forgot Password

Category: Class 12

Discussion Forum Latest Questions